Executive Summary

This vulnerability is a sandbox escape in Terrarium that allows an attacker to execute arbitrary code with root privileges on the host process. It is achieved through JavaScript prototype chain traversal, which bypasses the sandbox's intended isolation.

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Impact Analysis

The vulnerability can lead to an attacker gaining root-level access on the host system running Terrarium. This means the attacker could execute any code they want on the host, potentially compromising the entire system, accessing sensitive data, modifying or deleting files, and disrupting services.

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Compliance Impact

The provided information does not include any details about the impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Mitigation Strategies

To mitigate the sandbox escape vulnerability in Terrarium, ensure that you deploy the sandbox in a fully compartmentalized environment such as a Docker container or a GCP Cloud Run instance, as designed.

Since the sandbox is recycled after every invocation and restricts filesystem, threading, subprocess, and network access, maintaining these isolation boundaries is critical.

Additionally, monitor for updates or patches from the Terrarium project repository and apply them promptly.

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